Technical FAQs

Ask a Question

What is suffix 2100 and how does it work?

Issue:
Need to know what suffix 2100 indicates on a breaker part number

Product Line:  
All products with this suffix.

Environment:
QO/QOB, older MCCBs such as FA/FAL, LA/LAL, etc

Resolution:
Suffix 2100 specifies a normally open bell alarm contact.  
A bell alarm changes state only if the breaker trips or is reset. The 2100 is normally open and closes when the breaker trips.  
Was this helpful?
What can we do to improve the information ?